Manifold for internal-combustion engines



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MANIFDLD 'Fo R 'INTERNAL 'COMBUSTION ENGINES. "APPLl-CATLQN FILED APn.2s,1919.

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Patented Jan; 6, 1920.

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:Ei-EPH C. CHESNTT, 0F EOTTSTO'WN, PENNSYLVANIA.

132mm i. specimen@ of elimination filed April Q5,

To all whom t may. concern:

Be it known'that l., RALPH C. Clanserver, a citizen of the United States, residing at Pottstovviucounty of Montgomery, State o' nia, lia-ve invented va certain new A e l niprovenient in Manifolds for Inte nal` oi-uhustion Engines, and declare "lljoii ng'to be a full7 clear, and exact rlcscrrptioirgoi he saine, 'such as Will enable others skilled iii-the art to ivliich iepertains to make and use the same.' reference being 'had to the accompanying drawings, which portion of the cylinder casting.

` iv-iv ing. 1.

,the casting c.

Fig. 4 is a similar section. on the line Fig. 5 is a view similar to Fig. 3 showing a modification of the construction.

Fig. 6 is a View similar to Fig. 4 except the section is continued into the cylinder Acasting through one of the intake passages for the engine.

a is the exhaust manifold having the discharge opening at a2 and lateral ports as a3 a a3 which register with exhaust passages in the cylinder casting. b is a downward extension from the manifold a. and may lie cast integral therewith. The extension I) forms a wall surrounding a groove semicircular in cross section extending into a machined face of the manifold ny The manifold a. has a machined i'aee at (L5 on one side adapted to [it against a` machined surface on the side of the cylinder casting..

c is the cylinder casting having exhaust passages c2 and intake passages 0.

c3 is a groove semi-circular in cross section extending into the machined surface of When the manifold a fis secured to the cylinder hloek c its machined face f1.5 comes against the machined face on said cylinder block, the lateral exhaust in take passages a in said manifold register Letters Patent.`

wig. Serial No. 292,3551.

ling with the discharge orifices of the passages c2 in the cylinder casting and a groove 52 registering with the groove c3 so that said grooves together form an intake manifold cylindrical in cross section, liali the Wall of which is in the manifold' and half in the cylinder casting.

et is a passage extending transversely across the c vinder casting, and through the same, communicating at one end with the eaieatea aan. e, ieee.

cylindrical passage or manifold b2 c3 and designed to open at the other side of the cyln inder casting for receiving an explosivemixture. ri`he various intake passages c 1n the cylinder 'asting comnuinicate with the manifold b2 c and aie'all supplied in the modiication shown in Fig. l through the transverse passage' ci. l The exhaust manifold a, stands out a dis` tance from the.I cylinder block vwhen the manifold is secured in position and has laterally extending passages (1.4' at a4 at comy municating with the openings a3 a3 a3 a3 and registering with the exhaust passage of the engine. The interior of the exhaust 1nani-l fold L is separated from the intake manifold b2 by an integral cast Wall so that the heat from the exhaust shall be communicated to the incoming charge in the intake manifold b2 03. p,

if it is desired to use specially heavy liquid fuel or it' .for any other reason, a special heating of the intake gases isv re quired the cavity of the exhaust passage a is extended downward as shown in Fig. 5 so that the separating wall between the i11- take and exhaust manifold shall of greater extent.

If it is desired to have the carburetor uponV the same side oi the engine as the valves and manifold said manifold is'provided with a passage 04 (Fig. 6) having its Wall casti integral `With the manifold a b and serving as a conduit to admit the explosive mixture to the intake manifold. l

The above described construction locates the exhaust passage so that, where itlextends beyond the intake passage, the. atmosplieriel air shall have access to its entire outside Wall.

What I ,claim is:

l. in an'iapparatus of the kind described, the con'ibiiiation of a cylinder block casting", a manifold, said manifoldV being adapted to be secured to said casting. a groove inthe cylinder casting, a groove in said manifold,

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said grooves being adapted to register with each other and their walls together to forni the walls of the intake passage, saidnianifold being provided with an exhaust passage having a portion of its wall in common with a portion of said intake passage, said exhaust manifold being' located at a distance from the joining surface of said manifold and cylinder casting, and so that the ont side air shall have access to alarge portion of its inclosingwwall.

2. Tn an apparatus the combination of a cylinder block casting, a manifold, said manifold being adapted to be secured to said casting, a groove in the c vlinder casting. a groove in said manifold, said grooves being' adapted to register with each other and their walls together to forni the 'all of the intake passage, said 1nanifold being provided with an exhaust passage having,r a portion of its wall in common with a portion of the wall of said intake passage` said exhaust manifold being located at a distance. from the joining` surfaces between ft'mthe kind described,kv

said manifold and cylinder casting, a passage transvcrsel)v through said cylinder casting' communicating v ith the groove in said cylinder casting for the purpose described. 3. ln an apparatus of the kind described, the combination of a cylinder block casting, a manifold, said manifold being' adapted to be secured to said astingg a groove in the cylinder casting, a groove in said manifold` Said grooves bein;` adapted to register with each other and their walls together to forni ..ti1e-viilllrif the intake passage, said manifold beine` provided with an exhaust passage having a portion of its wall in common with a portion of the wall of said intake passage, said exhaust manifold being" located at a distance from the joining surfaces between said manifold and cylinder casting' and so constructed that access of air is permitted all around said manifold for a portion of the length of said manifold.

In testimony whereof l sign this specitication.

RALPH C. CHESNUTT. 

